feat(ui): add Mosaic Menu component updates

[austincalvelage]

Description

Preview: https://swingset-bajt81n81.clerkstage.dev/components/menu

Updates the Mosaic Menu to match the Figma:

• Aligns the menu dimensions, spacing, interaction states, and shadows with the design.
• Composes item icons and labels through Menu.Item children instead of an icon prop.
• Adds a color prop supporting neutral and negative, with neutral as the default.

import { Icon } from '@clerk/ui/mosaic/components/icon';
import { Menu } from '@clerk/ui/mosaic/components/menu';

<Menu.Root>
  <Menu.Trigger />
  <Menu.Content>
    <Menu.Item label='Add workspace'>
      <Icon name='plus' />
      Add workspace
    </Menu.Item>
    <Menu.Item
      label='Sign out'
      onClick={signOut}
    >
      <Icon name='log-out' />
      Sign out
    </Menu.Item>
    <Menu.Item
      label='Delete user'
      color='negative'
      onClick={deleteUser}
    >
      <Icon name='close' />
      Delete user
    </Menu.Item>
  </Menu.Content>
</Menu.Root>;

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 6ed1076

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 0 packages

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Ready	Preview	Jul 30, 2026 6:31pm
swingset	Ready	Preview	Jul 30, 2026 6:31pm

[alexcarpenter]

no changeset needed as this is not public facing atm. so we can just do an empty changeset for now.